Access to effective healthcare: effective self-management support intervention for patients with a chronic condition and a low social economic status: a systematic review. Issue 1 (December 2015) - Van Hecke, Ann; Heinen, Maud; Fernandez-Ortega, Paz; Graue, Marit; Hendriks, Jeroen; Høy, Bente; Köpke, Sascha; Lithner, Maria; van Gaal, Betsie